Ovulation date keeps moving on Glow App

Laura

Just checking in to see if anyone else has had their ovulation date move on the glow app. I am using an ovulation kit to test my LH. I think I actually ovulated two days ago ( dark line on the ov kit, lower back pain, cramps etc). Now the glow app says nope two more days ( it has moved twice this time). I am pretty regular with my AF (28 day cycle). Anyone else had this problem? Thinking I might to try a different app or pay for the ov kit app to be more accurate...